(iii) maintain all records, logs and other materials required by the FAA to be maintained in respect of the Aircraft. All repairs, parts, replacements,
mechanisms, devices and services installed or made under this Subsection 11(c) shall be and remain free and clear of any Liens and shall immediately, without further act, become the property of Lessor and part of the Aircraft. 

 d. Lessee will not make or authorize any improvement, change, addition or alteration to the Aircraft (i) if such improvement, change, addition or
alteration will impair the originally intended function or use of the Aircraft or impair the value, utility or remaining useful life of the Aircraft as it existed immediately prior to such improvement, change, addition or alteration, except that the
value (but not the utility, condition, remaining useful life or airworthiness) of the Aircraft may be reduced by the value of the Parts that Lessee deems obsolete or no longer suitable or appropriate for use in the Airframe if replaced by an
equivalent Part of equal or greater value, utility, condition and airworthiness. If any parts installed in or attached to or otherwise becoming a part of the Aircraft as a result of any such improvement, change, addition or alteration shall not be
readily removable without damage to the Aircraft, such Parts shall become property of Lessor. If no Event of Default shall have occurred and be continuing, any Part which is 


  


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